/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2016 pjoc.pub, blademainer.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

package pub.pjoc.util;

import pub.pjoc.pay.constants.ResultCodeConstants;
import pub.pjoc.pay.vo.ReturnResult;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.validation.ObjectError;

import java.util.Iterator;
import java.util.List;

/**
 * @author xiongyingqi
 * @since 16-11-16 下午4:13
 */
public abstract class BindingResultUtils {
  public static ReturnResult buildResult(BindingResult bindingResult) {
    if (!bindingResult.hasErrors()) {
      return null;
    }

    ReturnResult returnResult = new ReturnResult();
    returnResult.setCode(ResultCodeConstants.CODE_PARAMS_ERROR);
    returnResult.setMessage("PARAMS_ERROR");
    StringBuilder builder = new StringBuilder();
    List<ObjectError> allErrors = bindingResult.getAllErrors();
    for (Iterator<ObjectError> iterator = allErrors.iterator(); iterator.hasNext(); ) {
      ObjectError error = iterator.next();
      if (!(error instanceof FieldError)) {
        continue;
      }
      FieldError fieldError = (FieldError) error;
      String field = fieldError.getField();
      String defaultMessage = fieldError.getDefaultMessage();
      builder.append(field);
      builder.append(defaultMessage);
      if (iterator.hasNext()) {
        builder.append(";");
      }
    }
    returnResult.setDescribe(builder.toString());
    return returnResult;
  }
}
